Bell System Practices Plant Series Adjustments page 46

SECTION
573-127- 700
Check the No.
(2)
accordance with the instructions given
for the No. and No.
2
of the pivoted sensing head.
Check the No.
(3) 1,
tacts in accordance with the instructions
given for the No. No.
1,
utor contacts of the pivoted sensing head.
STORING SWITCH CONTAC TS NO.
THROUG H NO.
5:
switch contacts No.
cordance with the instructi ons
the storing switch contacts No.
of the pivoted sensing head.
No.
5
STORING
SWITCH
CLUTCH-TRIP CONTACTS
(a) TO CHECK:
With both magnets de-energized and the
(1)
pivoted reader
reader transmitter clutches latched and in
the stop position, turn the motor off.
Hold the fixed reader transmitter
(2)
the pivoted reader
against rotation. Energize both magnets.
Figure
7 -
Page
46
P,ages
46
and No. contacts in
2 4
distributor contacts
4
No. and No. con­
3, 5
and No. distrib­
3, 5
storing
Check the
in ac­
through No.
5
1
given for
through
1
AUXILIA RY
AND
distributor and fixed
and
distributor gears
AUXILIARY
Pulse Length Requirements for Storing Switch Auxiliary Contacts
Unit Fixed Head)
(28B
Release the gears and turn the motor on.
(3)
With the test set connected to the output
( 4)
of the distributor, align the end of the
distributor stop
mark on the stop
scale.
(b) REQUffiEMENTS:
1
With the test set connected to the aux-
(1}
iliary contact, the contact shall close at
divisions in start pulse segment of
12 ±30
test-set scale and open at
pulse segment of test-set
in No.
4
(See Figure
7. )
With the distributor clutch-trip contact
(2)
electrically isolated from the circuit,
the clutch-trip contact shall close at
divisions in No.
set scale and open at
No. pulse segment of the test-set scale.
5
(See Figure
7.)
(c) TO ADJUST: Position the respective con­
tact adjusting screws.
-1
-I
39 DIV. 1-
pulse image with the
segment of the test-set
divisions
70 ±30
pulse segment of the test­
4
divisions in the
67 ±30
!-- 7 0 DIV.
I-
.
7 DIV
6
CLUTCH TRIP
142
scale.
39 ±30